I'm still having trouble seeing what this would do for the community, AH, or HTC. Do you or the OP have stats on non subscribers posting? Is there a pandemic going on that most of us seem to miss?
Do you feel like non subscribers are taking away from your chance to post? If its about showing you're "elite" because you pay, well you get to play the game, and in the past when HTC has had a vote on new aircraft, only subscribers have been able to vote.